All irrigation systems require proper maintenance, and drip irrigation systems are no exception. The major cause of most drip irrigation system failures is clogging of drip emitters and micro sprinklers, therefore, a disc or screen filter installed before the pressure regulator is the most important component in the micro irrigation system. The pipe thread plastic disc or screen filters are simple to install and are an economical method to protect a drip irrigation system by preventing such clogging. Periodically the discs or screens need to be cleaned.
Screen filters are the most common filters used in the irrigation industry and in most cases the least expensive. They are generally used as a backup for any type of drip irrigation installation and are mainly installed where the quality of water is good. Screen filters are excellent for removing hard particulates from water, such as sand and other small elements often found in city water. The screen filters are not suitable for removing organic materials such as algae, mold and slime. These non-solid materials tend to embed themselves into the screen material where they are very difficult to remove. In other cases they simply slide through the holes in the screen by temporarily deforming their shape. Screen filters are cleaned by removing the cover and hand cleaning the screen.
Installation for 3/4" and 1" MPT Filter
1. The filter should not be under constant pressure so it will always come after some type of control valve either automated or manual.
2. If you are connecting to a hose faucet then the filter would come after the back-flow device if used
3. Make sure the canister is in a direction that it can be taken off without being blocked by something. Placing the canister facing the ground may block you from un-screwing it to remove the screen or using the flush valve for cleaning.
3. After the filter place your pressure regulator
4. After the pressure regulator install an adapter for your poly tubing connection.
5. Make sure to check the water flow driection which is molded into the top of the filter case. The flow for screen and disc elements are opposite!
6. For dirty water you may use multiple filters in tandem starting with a course screen (40-80 mesh) progressing to finer screens or discs.
7. Filters MUST be flushed / Cleaned on a regular basis, replace any ripped or broken screens when cleaning.